Home / 287,431.13-396,667.21-160,106.78

Finding the Fourth Proportional to 287,431.13, 396,667.21 and 160,106.78

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Solution

The fourth proportional to 287,431.13, 396,667.21 and 160,106.78 is: 220,954.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,431.13 : 396,667.21 = 160,106.78 : x
  2. Step 2: Convert to fraction form
    287,431.13/396,667.21 = 160,106.78/x
  3. Step 3: Cross multiply
    287,431.13x = 396,667.21 × 160,106.78
  4. Step 4: Simplify right side
    287,431.13x = 63,509,108,737.52
  5. Step 5: Solve for x
    x = 63,509,108,737.52/287,431.13
  6. Step 6: Final answer
    x = 220,954.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.